CA640874A - Automatic volume control for seismograph signal amplifiers - Google Patents

Automatic volume control for seismograph signal amplifiers

Info

Publication number
CA640874A
CA640874A CA640874A CA640874DA CA640874A CA 640874 A CA640874 A CA 640874A CA 640874 A CA640874 A CA 640874A CA 640874D A CA640874D A CA 640874DA CA 640874 A CA640874 A CA 640874A
Authority
CA
Canada
Prior art keywords
volume control
automatic volume
signal amplifiers
seismograph signal
seismograph
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA640874A
Inventor
P. Woods John
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Atlantic Richfield Co
Original Assignee
Atlantic Refining Co
Publication date
Application granted granted Critical
Publication of CA640874A publication Critical patent/CA640874A/en
Expired legal-status Critical Current

Links

CA640874A Automatic volume control for seismograph signal amplifiers Expired CA640874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA640874T

Publications (1)

Publication Number Publication Date
CA640874A true CA640874A (en) 1962-05-08

Family

ID=35919390

Family Applications (1)

Application Number Title Priority Date Filing Date
CA640874A Expired CA640874A (en) Automatic volume control for seismograph signal amplifiers

Country Status (1)

Country Link
CA (1) CA640874A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344364A (en) * 1965-12-10 1967-09-26 Alford Andrew Amplitude of h.f. oscillator stabilized by rectified output of l.f. osc.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344364A (en) * 1965-12-10 1967-09-26 Alford Andrew Amplitude of h.f. oscillator stabilized by rectified output of l.f. osc.

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